Lubricants play a very important role in multiple industries in minimizing wear and friction between two moving parts. Most lubricants are produced from petroleum oil which is poorly biodegradable and toxic in nature. Hence these lubricants are highly undesirable due to environmental hazards and the health and safety of the operator. Bio-Lubricants like Castor Oil have found a potential scope in research and are being used in various applications as a substitute for these chemical lubricants. This paper examines the Tribological Properties of developed Bio-Lubricants, prepared using Castor Oil and Neem Oil in a mixing ratio of 20%. Wear and Friction analysis has been carried out using Pin on Disc apparatus at varying loads, which has shown that the blend of Castor Oil as a base with 20% Neem Oil has promising properties, with around 70% reduction in wear rate at specific loads, hence showcasing a tremendous capacity for being used in maintenance applications. An overall reduction in wear and coefficient of friction was observed in the developed mixture, making it a potential environment-friendly replacement for chemical lubricants and an upgrade over Pure Refined Castor Oil.
润滑剂在减少两个运动部件之间的磨损和摩擦方面发挥着非常重要的作用。大多数润滑油是从石油中提取的，石油的可生物降解性差，而且本质上是有毒的。因此，由于环境危害和操作人员的健康和安全，这些润滑剂是非常不受欢迎的。像蓖麻油这样的生物润滑剂已经在研究中找到了潜在的范围，并被用于各种应用中，作为这些化学润滑剂的替代品。本文研究了蓖麻油和印度楝油以20%的混合比例制备的生物润滑油的摩擦学性能。使用Pin on Disc设备进行了不同负载下的磨损和摩擦分析，结果表明，蓖麻油与20%印楝油的混合基料具有良好的性能，在特定负载下可减少约70%的磨损率，因此在维护应用中显示出巨大的容量。在开发的混合物中，观察到磨损和摩擦系数的总体降低，使其成为化学润滑剂的潜在环保替代品，并且是纯精炼蓖麻油的升级版。
{"title":"Development and Tribological Analysis of Bio-Based Lubricant Using Two Non-Edible Oils: Castor Oil and Neem Oil","authors":"Ayan Bindra, Dipali Yadav, Manan Anand, R.C. Singh","doi":"10.61552/jme.2023.02.002","DOIUrl":"https://doi.org/10.61552/jme.2023.02.002","url":null,"abstract":"Lubricants play a very important role in multiple industries in minimizing wear and friction between two moving parts. Most lubricants are produced from petroleum oil which is poorly biodegradable and toxic in nature. Hence these lubricants are highly undesirable due to environmental hazards and the health and safety of the operator. Bio-Lubricants like Castor Oil have found a potential scope in research and are being used in various applications as a substitute for these chemical lubricants. This paper examines the Tribological Properties of developed Bio-Lubricants, prepared using Castor Oil and Neem Oil in a mixing ratio of 20%. Wear and Friction analysis has been carried out using Pin on Disc apparatus at varying loads, which has shown that the blend of Castor Oil as a base with 20% Neem Oil has promising properties, with around 70% reduction in wear rate at specific loads, hence showcasing a tremendous capacity for being used in maintenance applications. An overall reduction in wear and coefficient of friction was observed in the developed mixture, making it a potential environment-friendly replacement for chemical lubricants and an upgrade over Pure Refined Castor Oil.","PeriodicalId":42984,"journal":{"name":"Journal of Materials and Engineering Structures","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135953591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.61552/jme.2023.02.001
Viktor P. Kuznetsov, Anna V. Kosareva
The paper presents the results of experimental studies of the AISI 304 steel disc surface after finishing turning, electropolishing and nanostructuring burnishing after one and five passes of the tool with a natural diamond tip with a radius of 2 mm. It is shown that surface layer nanocrystallization provides for almost complete decomposition of austenite in a layer up to 100 µm thick, an increase in microhardness up to 400...450 HV0.025 and a 3.3-fold reduction in the wear intensity on hardened AISI 1045 steel under conditions of lubrication with industrial oil compared with electropolishing. The content of residual austenite in the surface layer is not more than 5% when the temperature rises to 400°C.
{"title":"Increase of Wear and Heat Resistance of the AISI 304 Steel Surface Layer by Multi-Pass Nanostructuring Burnishing","authors":"Viktor P. Kuznetsov, Anna V. Kosareva","doi":"10.61552/jme.2023.02.001","DOIUrl":"https://doi.org/10.61552/jme.2023.02.001","url":null,"abstract":"The paper presents the results of experimental studies of the AISI 304 steel disc surface after finishing turning, electropolishing and nanostructuring burnishing after one and five passes of the tool with a natural diamond tip with a radius of 2 mm. It is shown that surface layer nanocrystallization provides for almost complete decomposition of austenite in a layer up to 100 µm thick, an increase in microhardness up to 400...450 HV0.025 and a 3.3-fold reduction in the wear intensity on hardened AISI 1045 steel under conditions of lubrication with industrial oil compared with electropolishing. The content of residual austenite in the surface layer is not more than 5% when the temperature rises to 400°C.","PeriodicalId":42984,"journal":{"name":"Journal of Materials and Engineering Structures","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135954967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.48014/ems.20220906001
Xinhao An, J. Hou
Accurate vehicle physical parameters play an important role in the use of vehicle vibration information. A method to identify vehicle parameters based on road excitation is proposed. Firstly, the frequency response function of vehicle acceleration response with respect to road displacement excitation is derived based on the contact conditions for the displacement between vehicle tires and road, and the relationship between frequency response function, vehicle acceleration response and road cross-section shape in the frequency domain is established. Then, the objective function is established using the frequency response of the road surface, and the physical parameters of the vehicle are identified using the interior point method. Finally, numerical simulation is performed and the physical parameters of the vehicle model are successfully identified. The results show that the method can effectively identify the physical parameters of vehicles.
{"title":"Vehicle Parameter Identification Method Based on Road Excitation","authors":"Xinhao An, J. Hou","doi":"10.48014/ems.20220906001","DOIUrl":"https://doi.org/10.48014/ems.20220906001","url":null,"abstract":"Accurate vehicle physical parameters play an important role in the use of vehicle vibration information. A method to identify vehicle parameters based on road excitation is proposed. Firstly, the frequency response function of vehicle acceleration response with respect to road displacement excitation is derived based on the contact conditions for the displacement between vehicle tires and road, and the relationship between frequency response function, vehicle acceleration response and road cross-section shape in the frequency domain is established. Then, the objective function is established using the frequency response of the road surface, and the physical parameters of the vehicle are identified using the interior point method. Finally, numerical simulation is performed and the physical parameters of the vehicle model are successfully identified. The results show that the method can effectively identify the physical parameters of vehicles.","PeriodicalId":42984,"journal":{"name":"Journal of Materials and Engineering Structures","volume":"50 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81782314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.48014/ems.20220727001
Hongbin Ge
The airport cement concrete pavement is prone to surface shrinkage cracks during construction under strong wind and high temperature conditions. Based on this, in this paper, the influence effects and mechanisms of curing methods on early shrinkage and crack resistance of concrete were investigated through indoor tests to simulate strong wind environment and high temperature environment in summer, and the applicability of different curing methods in engineering practice was verified by on-site experiments. The indoor experiment results demonstrated that the concrete was more prone to cracks under strong wind than under high temperature. The indoor and on-site experimental results showed that it was difficult to ensure a crack-free concrete surface by employing traditional geotextile, simply spraying curing agent or using only water-saving moisturizing curing film, among them, utilizing composite geotextile curing film has the best anti crack effect. In addition, incorporating polymer water absorbent resin enables the concrete to be cured internally, so it can be used as a supplementary curing measure to further improve the crack resistance of concrete in strong wind and high temperature weather.
{"title":"Investigation on Surface Crack Resistance and Curing Measures of Airport Cement Concrete Pavement during Construction in Strong Wind and High Temperature Weather","authors":"Hongbin Ge","doi":"10.48014/ems.20220727001","DOIUrl":"https://doi.org/10.48014/ems.20220727001","url":null,"abstract":"The airport cement concrete pavement is prone to surface shrinkage cracks during construction under strong wind and high temperature conditions. Based on this, in this paper, the influence effects and mechanisms of curing methods on early shrinkage and crack resistance of concrete were investigated through indoor tests to simulate strong wind environment and high temperature environment in summer, and the applicability of different curing methods in engineering practice was verified by on-site experiments. The indoor experiment results demonstrated that the concrete was more prone to cracks under strong wind than under high temperature. The indoor and on-site experimental results showed that it was difficult to ensure a crack-free concrete surface by employing traditional geotextile, simply spraying curing agent or using only water-saving moisturizing curing film, among them, utilizing composite geotextile curing film has the best anti crack effect. In addition, incorporating polymer water absorbent resin enables the concrete to be cured internally, so it can be used as a supplementary curing measure to further improve the crack resistance of concrete in strong wind and high temperature weather.","PeriodicalId":42984,"journal":{"name":"Journal of Materials and Engineering Structures","volume":"56 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83479330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-28DOI: 10.48014/ems.20220728001
Xinyue Wang, Siqi Ding, Sufen Dong, Xiaomin Li, B. Han
As one of the most visible manifestations of the tangible footprint of human civilisation on the planet,concrete is largely and widely applied,and has become the most widely used man-made engineering material in the world.Concrete has changed the world and shaped human civilization,and will remain indispensable in the future.However,as one of the major sources of global carbon emissions,the production and application of large quantities of concrete has a huge impact on resource,energy and the environment.Based on the prediction that the rapid climate change,caused by the concentration of carbon dioxide in the atmosphere, will threaten the living conditions of human beings.Thus,the development of concrete is facing serious challenges in order to promote the perpetual development of human society and civilization.This paper firstly introduces the basic knowledge of concrete briefly,then summarizes the development history of concrete, analyzes the challenges of concrete development at present,and finally puts forward strategies and routes for the sustainable development of concrete.
{"title":"Sustainable Development of Concrete:Tackling the Climate Change Crisis Caused by Carbon Emissions","authors":"Xinyue Wang, Siqi Ding, Sufen Dong, Xiaomin Li, B. Han","doi":"10.48014/ems.20220728001","DOIUrl":"https://doi.org/10.48014/ems.20220728001","url":null,"abstract":"As one of the most visible manifestations of the tangible footprint of human civilisation on the planet,concrete is largely and widely applied,and has become the most widely used man-made engineering material in the world.Concrete has changed the world and shaped human civilization,and will remain indispensable in the future.However,as one of the major sources of global carbon emissions,the production and application of large quantities of concrete has a huge impact on resource,energy and the environment.Based on the prediction that the rapid climate change,caused by the concentration of carbon dioxide in the atmosphere, will threaten the living conditions of human beings.Thus,the development of concrete is facing serious challenges in order to promote the perpetual development of human society and civilization.This paper firstly introduces the basic knowledge of concrete briefly,then summarizes the development history of concrete, analyzes the challenges of concrete development at present,and finally puts forward strategies and routes for the sustainable development of concrete.","PeriodicalId":42984,"journal":{"name":"Journal of Materials and Engineering Structures","volume":"19 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75768813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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